Topic 3 Linear Graphing



STUDENT PLANNER 2012 Topic: LINEAR GRAPHS (Chapter 4) NAME: Remember you must do all the tasks in RED
Mymathsonline.com.au
username - mentone
password - linear
Log on to mymathsonline.com - there is three homework tasks you all must do
In this topic you will explore the following concepts
Plotting points, y-intercept, sketching linear graphs using the gradient-intercept method, sketching linear graphs using x-intercept and y-intercept method
VOCABULARY: Cartesian plane, co-ordinates, linear, linear graph, plotting, quadrants, slope, rise , gradient, y-intercept, x-intercept, substitute, x-axis, y-axis, origin, sketch run
dependent and independent variables

Abbreviations
eso – every second one
LHS – left hand side RHS – right hand side
CAS – graphics calculator
Classroom Activities
For everyone!
Working At Level
Working Above Level
1
Introduction to Linear Graphs
Investigating the Cartesian co-ordinate system using the CLASSPAD calculators
handout - An investigation of the Cartesian Co-ordinate System
Worksheet 98 & 99
Linear Graphs Pre-Test
Start working on the Exercise as determined by the Pre-test
2
Plotting Graphs
- Pretest (optional)
- Substituting practice
- Identifying linear graphs
- Plotting from a rule
- Plotting graphs
Notes: cover
Plotting points
Substituting
Identifying linear graphs
Quadrants
Skillsheet 4.2 & 4.3

Worked Examples
Pg 166
Ex 4B Q1ab, Q2eso, Q3, Q4
+ Worksheet 106
3
General equation of a straight line
- The gradient


- The y-intercept
Notes: cover
General equation of straight line with ‘m’ as gradient and ‘c’ and y-intercept
m = Rise ÷ Run
m = (y2 – y1) ÷ (x2 – x1)
Notes & Worked Examples
Pg 172 Ex 4C Q1abcdgj
Q2adgj Q3abcdef

Notes & Worked Examples
Pg 173 Ex 4C Q5adgj Q6, Q9
+ Skillsheet 4.7
+ Worksheet 103
+ Worksheet 100
4
Consolidation
- Time to catch up on exercises if need be



5
Sketching Linear Graphs
- Passing through the origin
- Gradient & y-intercept method
- x & y intercept method
- Vertical and horizontal lines
Notes & Worked examples
Pg178 Ex 4D Q5
Pg178 Ex 4D Q2adg,
Pg178 Ex 4D Q1aei
Pg178 Ex 4D Q3ab, Q4abcd,Q6

Skill Sheet 4.10
+ Skill Sheet 4.10
+ Worksheet 101
+ Worksheet 107
+ Puzzle Sheet 8.4
‘What was produced by Kato of Japan in 1901?’
6
Determining Linear Rules
- given gradient and y-intercept
- given gradient and one co-ordinate
- given two co-ordinates
Notes & Worked examples
Pg 181 Ex 4E Q1ace
Pg 181 Ex 4E Q2ad, Q3aceg, Q4ac
Pg 182 Ex 4E Q5ace, Q6ace,Q7ace
Puzzle Sheet 8.5 ‘Christmas Day 1859’
Cat and Mouse Problem
Worksheet 104 Linear Rules
7
Consolidation
- time to catch up on exercises

Start revising for the test. (30 minutes)
Worksheet 105
8
Applications of Linear Graphs to worded problems
- dependent and independent variables
Notes & Worked examples
Pg188 Ex 4F Q1, Q2
Pg188 Ex 4F Q7, Q8, Q11, Q12

Graphing Inequations
Pg 194 Ex 4G Q1, Q2, Q3eso
Simultaneous Equations
Pg 199 Ex 4H Q2, Q4, Q6
Chapter Review and Own Revision @ home
9
Group Investigation (Assessment)
- predictions
- dependent and independent variables
- tabulating results, averages & graphing
- spreadsheets and ICT
Bungee Barbie
Chapter Review and Own Revision @ home
Chapter Review and Own Revision @ home
10
Group Investigation continued
Bungee Barbie
Chapter Review and Own Revision @ home
Chapter Review and Own Revision @ home
11
Assessment – Test